Atlanta-based sustainability sites Mother Nature Network and Treehugger have been bought by New York media giant Interactive Corp. Mother Nature Network was founded 10 years ago by Joel Babbitt and Chuck Leavell, longtime keyboardist for The Rolling Stones. Terms of the deal were not disclosed. IAC (Nasdaq: IAC) has majority ownership of both Match Group, which includes Tinder, Match, PlentyOfFish and OkCupid, and ANGI Homeservices, which includes HomeAdvisor, Angie's List and Handy, and also...